摘要:这3名患者在取得稳定的分子学缓解之后(融合基因转阴PCRU)停用达沙替尼。1名患者复发,另外两名患者在1年后仍保持了PCRU。以前说过,达沙替尼确实可以提高免疫力,希望今后能获得更多的相关研究报告。
3 l$ f0 a* Y: H( C 关于这个研究值得注意的是,这三名患者都是服用格列卫失败后转用达沙替尼的,也即他们对格列卫是耐药的。这与法国的格列卫停药研究又有所不同,那个研究中的患者都是对格列卫反应良好的。希望医生们能扩大研究长期观察,看看停用达沙替尼是否能持久不复发。 W8 k$ E' j% d" I/ _2 M' H4 s9 a
3 \% B! f& z+ J- P5 i9 w* \作者:来自澳大利亚5 [# a3 x5 H, X- Z3 `/ o- B
来源:Haematologica. 2011.8.9.
$ [( J/ P3 Q& ~ a2 m! }Dear Group,! Y4 i, ^3 K" ]7 @ s5 @
$ B, A4 |0 }0 I! T: r' i
Some of you are on Dasatinib (Sprycel) and we wish to give news on all CML
" E* t" H# V; l5 P& c$ Btherapies. Here is a report from Australia on 3 patients who went off Sprycel
. d8 f& b. ]# |9 ?/ V/ i) wafter stable molecular response (PCRU). 1 patient relapsed but 2/3 patients; D5 s/ w1 f- ?# j' z
remain in stable PCRU at the 1 year mark. Some of you may remember that Sprycel
& g1 K) @/ g, L/ Z) Kdoes spike up the immune system so I hope more reports come out on this issue.; t4 n: i8 G `
% i! O/ b" [/ t8 V
The remarkable news about Sprycel cessation is that all 3 patients had failed
; t' Q+ n' [' R# i% F# ?Gleevec and Sprycel was their second TKI so they had resistant disease. This is8 i0 p$ ^0 J9 t
different from the stopping Gleevec trial in France which only targets patients! z _' k/ Q' B( Z
who have done well on Gleevec.
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Hopefully, the doctors will report on a larger study and long-term to see if the
% p& ], ?3 I9 cresponse off Sprycel is sustained.; s# M: o8 B a3 M1 v
8 l1 ^6 m7 l( q" s' D- X
Best Wishes,
2 Z6 g5 Y4 k2 J+ D3 j3 g( ZAnjana
# d. S: y' v$ b8 V/ k/ ]! h7 k6 n3 s, k [2 @7 p
" i$ _: h1 S; E& q8 W( Q/ r4 \1 n& ]
6 i" j9 G# w$ DHaematologica. 2011 Aug 9. [Epub ahead of print]
4 z6 ]4 \7 P w% }4 A& PDurable complete molecular remission of chronic myeloid leukemia following7 i% C- p, ?7 m# Q5 _
dasatinib cessation, despite adverse disease features.6 H5 \5 B5 i5 [3 g7 {
Ross DM, Bartley PA, Goyne J, Morley AA, Seymour JF, Grigg AP.5 \2 V- i+ k; D F2 T; U
Source
+ J. n6 S7 s5 P9 _Adelaide, Australia;5 }7 e6 O* A* u3 M0 M- S
2 J' p, a$ h" m9 ] M+ gAbstract
0 Z! q" p2 L* p% o w2 WPatients with chronic myeloid leukemia, treated with imatinib, who have a
7 ]! {& `1 \4 G- Edurable complete molecular response might remain in CMR after stopping* ?& K2 V& l \" h1 q5 d
treatment. Previous reports of patients stopping treatment in complete molecular
2 b1 Q& o% b* Z' G3 n+ yresponse have included only patients with a good response to imatinib. We
4 Z+ A, l+ O# p1 o0 r! l5 Bdescribe three patients with stable complete molecular response on dasatinib
) C9 H* b; H" Y; I8 m2 xtreatment following imatinib failure. Two of the three patients remain in
" A9 [9 ]; _ V' U/ B( j5 r hcomplete molecular response more than 12 months after stopping dasatinib. In( ^1 V( G4 x' {" H
these two patients we used highly sensitive patient-specific BCR-ABL1 DNA PCR to8 o/ v( ]% f1 Y% h2 B
show that the leukemic clone remains detectable, as we have previously shown in
5 k5 E/ f6 v4 {0 Kimatinib-treated patients. Dasatinib-associated immunological phenomena, such as
; n8 C1 Y4 d. [+ P! qthe emergence of clonal T cell populations, were observed both in one patient
& d7 a9 ?7 z8 Z4 awho relapsed and in one patient in remission. Our results suggest that the E) k* I# x1 F, \) V
characteristics of complete molecular response on dasatinib treatment may be
* _. g6 E' v' E* r9 T$ D; |0 |/ esimilar to that achieved with imatinib, at least in patients with adverse
6 ]6 F$ D5 p% Z- I; ?0 i' K# N; Udisease features.
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